Angle Gauges Are Dead
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About the Laser Square:
What if squaring your table saw blade took ten seconds and hit 0.06 degrees of precision?
The build is pretty simple: a gun sight laser calibrated with two screws, a makeup mirror stuck to the blade with a magnet, and a mark on the fence to aim at. If the bounced beam hits the mark, you're square.
It's not a finished product yet, but the idea works, and it meets or exceeds digital angle finders' precision. to see the 45 degree solution as well as how I 4x'd the precision even further, sign up for early video access at FitandFinish.co
0:00 - The concept
0:22 - Building the laser
1:24 - The mirror solution
1:42 - Live demo
2:28 - How precise is it?
3:06 - Word from our sponsor
3:43 - Math!
4:55 - Precision vs. accuracy
5:43 - What's next
A bit more context for accessibility and whatnot: this is a shop-built laser squaring tool for table saw blade calibration, built from a gun sight laser with adjustment screws, a steel makeup mirror, and adhesive magnets. It bounces a laser beam off the blade and reads the deflection at the fence, giving you blade squareness measurements down to 0.06 degrees. If you're into table saw setup, precision woodworking, or just want your blade actually square, this is it. More tools and shop projects coming from Fit + Finish soon.